pump tower function tests Shuoxing Wu WA105-3x1x1 bi-weekly meeting - - PowerPoint PPT Presentation

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May 17, 2023 7 likes •57 views

pump tower function tests Shuoxing Wu WA105-3x1x1 bi-weekly meeting 27.07.2016 LAr pump tower Shuoxing Wu ETHZ 2 LAr pump tower function test self-recirculation to simulate outer LAr bath real operation condition h valves open pump

SLIDE 1

pump tower function tests

Shuoxing Wu WA105-3x1x1 bi-weekly meeting

27.07.2016

SLIDE 2

LAr pump tower

Shuoxing Wu ETHZ

SLIDE 3

valves open

LAr pump tower function test

Shuoxing Wu ETHZ

uter LAr bath

self-recirculation to simulate real operation condition

pump ∆h

SLIDE 4

Pump motor speed (RPM) 1500 2000 2500 3000 3500 H (cm) ∆ 5 10 15 20 25 30 35 40

Measurements using pressure gauge Measurements using tape measure

Maximal level difference of 36 cm will cause an increase the LAr level in the 3x1x1 main vessel by 1.5 mm

level difference measurement

Shuoxing Wu ETHZ

∆h vs motor speed

https://www.dropbox.com/s/2ea4ewib5yuc389/VID_20160721_102310.mp4?dl=0

pump running video

SLIDE 5

Conclusions

1. Pump mechanical extraction/insertion OK.
2. Pump is quite and no vibration.
2. Maximal level difference is 36 cm at rated speed.
3. Pump tower will be delivered next week.

Points to pay attention

1. After pumping, the pump should be completely dry — moisture inside the pump

will become ice thus to block the impeller.

2. Need to discuss with Michael/David to change the filling procedure — first fill

the pump tower and test the pump before filling the whole cryostat.

Shuoxing Wu ETHZ